CN112123680A

CN112123680A - Production process of flexible rubber frame for LED backlight source

Info

Publication number: CN112123680A
Application number: CN202010976025.0A
Authority: CN
Inventors: 胡光辉; 张诺寒; 李晓然; 陈明波; 陈本亮
Original assignee: Guangdong Gma Optoelectronic Technology Co ltd; Xinyang Gma Optoelectronic Technology Co ltd; Xinyang Central Semiconductor Technology Co ltd
Current assignee: Guangdong Gma Optoelectronic Technology Co ltd; Xinyang Gma Optoelectronic Technology Co ltd; Xinyang Central Semiconductor Technology Co ltd
Priority date: 2020-09-16
Filing date: 2020-09-16
Publication date: 2020-12-25

Abstract

The invention relates to a production process of a flexible rubber frame for an LED backlight source, which carries out production and manufacturing work of the rubber frame by improving the production process, achieves the beneficial effects of long service life and difficult breakage of the flexible rubber frame under the condition of the same cost, utilizes the matching of a clamping rod and a matching strip on a curved plate in a production device using the production process to ensure that a male template is tightly attached to a movable template, simultaneously facilitates the unlocking of the male template and the movable template, facilitates the replacement of a mold, carries out the production of the flexible rubber frames with different sizes, is internally connected with a top plate, utilizes the male template to move along with a second hydraulic push rod, leads an ejector rod on the top plate to be contacted with the matching rod, leads the top plate to relatively move towards the right side relative to the male template, and pushes out a formed rubber frame on a reverse mold groove, thereby finishing the processing work of the rubber frame, has ingenious structure, and facilitates the replacement of the template, the valve switch is simple to operate, the plugging effect is ideal, the production efficiency of the flexible rubber frame is greatly improved, and the flexible rubber frame is suitable for popularization and use.

Description

Production process of flexible rubber frame for LED backlight source

Technical Field

The invention belongs to the technical field of backlight sources, and particularly relates to a production process of a flexible rubber frame for an LED backlight source.

Background

The backlight has gluey frame, when the equipment backlight, often need paste the gum on gluey frame and carry out the fixed mounting who glues the frame, it often has the life-span to glue the frame short, the problem of easy rupture, simultaneously in the production process who carries out flexible gluey frame, often carry out processing production through the mould, prior art's mould is in the production process who carries out the gluey frame of different patterns and size, often change more troublesome, and at the in-process that flows that carries out of fused mixed liquid, need carry out the switch of pipeline and the production work of closed in order to accomplish gluey frame, consequently, we have researched and developed a LED backlight and have glued frame production technology and apparatus with flexibility with the problem more than solving.

Disclosure of Invention

Aiming at the problems, the invention provides a beam bottom reinforcing device suitable for building structures with different sections, and solves the problems that the template clamping device in the prior art is poor in clamping effect and cannot flexibly adjust clamping according to the special requirements of the section of a beam body.

In order to achieve the above purpose, the invention provides the following technical scheme, a production process of a flexible rubber frame for an LED backlight source comprises the following steps:

the method comprises the following steps: selecting raw materials, and uniformly mixing polypropylene, phenolic resin, polystyrene and an additive, wherein the ratio of the raw materials to the additive is 7: 4: 2: 2, wherein the additive comprises the following components: the butadiene, the sodium nitrate, the methyl phenol and the zinc oxide are in the following proportion: 5: 2: 2: 2, under the parameter, the corrosion resistance degree of the rubber frame can be ensured, the service life is long, and the rubber frame is high in strength and not easy to break;

step two: mixing the raw materials and then putting the mixture into an injection mold, wherein the temperature inside the mold is 720 ℃, and simultaneously, the temperature inside the injection mold is kept at 700-720 ℃, the temperature keeping time is 12 minutes, and the raw materials are in a molten state;

step three: injecting the raw material in a molten state into a mold cavity under the pressure of 38MPa, and then cooling for 7 minutes;

step four: and opening the mold and taking out the molded rubber frame.

The production device of the flexible rubber frame for the LED backlight source by using the production process comprises a base, and is characterized in that a mold closing device and an injection device are mounted on the base;

the injection device comprises a hopper arranged at the upper end of a base, the lower end of the hopper is communicated with a transition channel transversely connected to the base, the left end of the transition channel is connected with a mold closing device, a first valve structure is connected between the hopper and the transition channel, the right end of the transition channel is connected with a first hydraulic push rod, the first hydraulic push rod is connected with a first hydraulic system, the condition that a molten mixed liquid in the transition channel is pushed into the mold closing device by the first hydraulic push rod is met, the outlet end of the left end of the transition channel is connected with a second valve structure, and heating devices are arranged outside the hopper and the transition channel;

the mold closing device comprises a fixed mold plate arranged on a base, a channel is arranged in the fixed mold plate and communicated with the end part of a transition channel, the left end of the fixed mold plate can be detachably connected with a female mold plate which is in transverse sliding fit on the base, the mold closing device also comprises a movable mold plate which is transversely connected on the base, the left end of the movable mold plate is connected with a second hydraulic push rod, the second hydraulic push rod is connected with a second hydraulic cylinder arranged on the base, the right end of the movable mold plate can be detachably connected with a male mold plate which is transversely connected on the base in a sliding way, a trumpet-shaped channel is arranged in the female mold plate and communicated with the channel in the fixed mold plate, the opposite surfaces of the female mold plate and the male mold plate are provided with matched reverse mold grooves, a pi-shaped top plate is transversely connected in the male mold plate, and the left end of the top plate is connected with a top rod extending out of the, the movable template is provided with a rectangular hole matched with the ejector rod, and the base is connected with an L-shaped matching rod matched with the ejector rod, so that the matching rod is matched with the ejector rod to push the top plate out;

the mold closing device and the injection device are electrically connected with a controller installed on the base.

Preferably, the peripheral surfaces of the male template are respectively connected with a curved plate in a rotating manner, one end of the curved plate, facing the movable template, is connected with a clamping plate, the end part of the clamping plate is connected with a rubber strip, and the peripheral surfaces of the movable template are respectively connected with an L-shaped matching strip matched with the corresponding curved plate.

Preferably, the peripheral surface of the female die plate is connected with a rectangular plate, the rectangular plate is in threaded fit with a bayonet lock, and the peripheral surface of the fixed die plate is provided with threaded holes matched with the bayonet lock on the corresponding surface.

Preferably, the first valve structure comprises a first transition cylinder connected between the lower end of the hopper and the transition channel, the inner diameter of the first transition cylinder is larger than the inner diameters of the hopper and the transition channel, the first transition cylinder is rotatably connected between the lower end of the hopper and the upper end of the transition channel, an internal thread is formed in the first rotation cylinder, two sides of the first transition cylinder are vertically and slidably connected with a first clamping jaw, two ends of the first clamping jaw are respectively connected with a triangular wedge block with triangular inclined surfaces oppositely arranged, an external thread matched with the internal thread of the first rotation cylinder is formed on the outer side wall of the first clamping jaw, a first driving ball arranged in the first transition cylinder is clamped between the two groups of first clamping jaws, and a first driving bracelet is connected outside the first rotation cylinder;

the second valve structure including the second transition section of thick bamboo of connecting transition passageway exit end, the internal diameter of a second transition section of thick bamboo be greater than the internal diameter of hopper and transition passageway, still including rotating the second rotation section of thick bamboo of connection at transition passageway tip, the second rotate the section of thick bamboo in to have the internal thread, the vertical sliding connection second jack catch in both sides of a second transition section of thick bamboo, second jack catch both ends connect the relative triangle-shaped voussoir that sets up in a triangle-shaped inclined plane respectively, second jack catch lateral wall open have and rotate a section of thick bamboo internal thread matched with external screw thread with the second, two sets of the second jack catch between the card establish a second drive ball of arranging in a second transition section of thick bamboo, the second rotate a section of thick bamboo external connection second drive bracelet.

The invention has the beneficial effects that: the invention carries out the production and manufacturing work of the rubber frame by improving the production process, and under the condition of the same cost, the invention achieves the beneficial effects of long service life and difficult breakage of the flexible rubber frame, in the production device using the production process, the matching of the clamping rod and the matching strip on the curved plate is utilized, so that the male template is tightly attached to the movable template, the unlocking of the male template and the movable template is also facilitated, the mold is convenient to replace, and the production work of the flexible rubber frames with different sizes is carried out, meanwhile, the jaws are driven to move along the direction of the transition cylinder by the rotation of the rotating cylinder, so that the driving ball carries out the work of plugging or opening the channel, the valve switch function is played, the sealing effect is good, the plugging effect is ideal, the top plate is connected in the male template, and in the process of utilizing the male template to move along with the second hydraulic push rod, the ejector rod on the top plate is contacted with the matching rod, so that the top plate relatively moves towards, the device has the advantages of ingenious structure, convenient replacement of the template, simple valve switch operation, ideal plugging effect, greatly improved production efficiency of the flexible rubber frame and suitability for popularization and use.

Drawings

Fig. 1 is a block diagram of a production process of a flexible rubber frame in the invention.

FIG. 2 is a perspective view of a production apparatus of the present invention using the production process of the present invention.

FIG. 3 is a perspective view of a production apparatus using the production process of the present invention.

FIG. 4 is a front view of a production apparatus of the present invention employing the production process of the present invention.

FIG. 5 is a cross-sectional view of a production apparatus of the present invention using the production process of the present invention.

Fig. 6 is a three-dimensional structure diagram of four sets of templates in accordance with the present invention.

Fig. 7 is a partial cross-sectional view of the four sets of templates of the present invention mated together.

FIG. 8 is an enlarged view of portion A of FIG. 7 according to the present invention.

Fig. 9 is a perspective view showing a valve structure in the production apparatus of the present invention.

Fig. 10 is a perspective view showing a first valve structure in the production apparatus of the present invention.

Fig. 11 is a perspective view showing the structure of a second valve in the production apparatus of the present invention.

Fig. 12 is a perspective view showing a part of the structure of the production apparatus of the present invention.

Reference numerals: 1. a base; 2. a mold clamping device; 3. an injection device; 4. a hopper; 5. a transition passage; 6. a first valve structure; 7. a second valve structure; 8. a first hydraulic push rod; 9. a heating device; 10. fixing a template; 11. a master template; 12. moving the template; 13. a second hydraulic push rod; 14. a second hydraulic cylinder; 15. a male template; 16. a die cavity is reversed; 17. a top plate; 18. a top rod; 19. a rectangular hole; 20. a mating rod; 21. a curved plate; 22. clamping a plate; 23. a rubber strip; 24. a mating strip; 25. a rectangular plate; 26. a bayonet lock; 27. a threaded hole; 28. a first transition cylinder; 29. a first rotating drum; 30. a first jaw; 31. a first drive ball; 32. a first drive bracelet; 33. a second transition cylinder; 34. a second rotary cylinder; 35. a second jaw; 36. a second drive ball; 37. the second drives the bracelet.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 12 in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

A production process of a flexible rubber frame for an LED backlight source comprises the following steps:

step four: and opening the mold and taking out the molded rubber frame.

The device for producing the flexible rubber frame for the LED backlight source by using the production process of claim 1 comprises a base 1, and is characterized in that a mold closing device 2 and an injection device 3 are mounted on the base 1, and the injection device 3 is communicated with the mold closing device 2;

the injection device 3 comprises a hopper 4 arranged at the upper end of a base 1, the hopper 4 is used for containing mixed raw materials, the lower end of the hopper 4 is communicated with a transition channel 5 transversely connected to the base 1, the left end of the transition channel 5 is connected with a mold closing device 2, a first valve structure 6 is connected between the hopper 4 and the transition channel 5, the first valve structure 6 plays a role of opening and closing, the raw materials in the hopper 4 are in a molten state, when the valve is opened, the raw materials in the molten state can enter the transition channel 5 through the first valve structure 6, the right end of the transition channel 5 is connected with a first hydraulic push rod 8, the first hydraulic push rod 8 is connected with a first hydraulic system, the first hydraulic system comprises a first hydraulic cylinder connected with the first hydraulic push rod 8, and the first hydraulic cylinder is connected with a hydraulic pump and a hydraulic oil cylinder, after the transition channel 5 is filled with the mixed liquid, the first hydraulic push rod 8 pushes the mixed liquid in the transition channel 5 to the left, so that the first hydraulic push rod 8 pushes the molten mixed liquid in the transition channel 5 to the mold closing device 2, the left end of the transition channel 5 is open, the left end of the transition channel 5 is open and communicated with the mold closing device 2, the outlet end of the left end of the transition channel 5 is connected with a second valve structure 7, the second valve structure 7 plays a role of opening the door, when the mixed liquid in a molten state is supplied into the transition passage 5, the second valve structure 7 is in a closed state, heating devices 9 are respectively arranged outside the hopper 4 and the transition channel 5, and the heating devices 9 are used for heating and insulating the raw materials in the hopper 4 and the transition channel 5 under the action of the controller to ensure that the raw materials are kept at the temperature mentioned in the process;

the mold closing device 2 comprises a fixed mold plate 10 arranged on a base 1, four groups of fixed cross rods arranged in a matrix are arranged on the base 1, the fixed mold plate 10 is arranged on the fixed cross rods, a channel is formed in the fixed mold plate 10 and is communicated with the end part of a transition channel 5, the sealing property is kept at the joint between the fixed mold plate 10 and the transition channel 5, the mixed liquid in a molten state is ensured not to flow out from a connector, the left end of the fixed mold plate 10 is detachably connected with a female mold plate 11 which is transversely matched on the base 1 in a sliding way, the female mold plate 11 is transversely arranged on the fixed cross rods in a sliding way in a penetrating way, so that the female mold plate 11 can transversely slide out from the fixed cross rods, the mold is convenient to replace, meanwhile, the female mold plate 11 can be smoothly arranged on the fixed mold plate 10 and can also move along the transverse direction of the, the movable die plate is characterized by further comprising a movable die plate 12 which is transversely connected to the base 1, the movable die plate 12 is also connected to the base 1 in a sliding mode through a fixed cross rod, the movable die plate 12 can only move along the transverse direction, the left end of the movable die plate 12 is connected with a second hydraulic push rod 13, the second hydraulic push rod 13 is connected with a second hydraulic cylinder 14 mounted on the base 1, the second hydraulic cylinder 14 is connected with a hydraulic system, the hydraulic system comprises a hydraulic pump and an oil tank, the right end of the movable die plate 12 can be detachably connected with a male die plate 15 which is transversely connected to the base 1 in a sliding mode, the male die plate 15 can be mounted on the movable die plate 12 through a detachable structure and can also move along the transverse direction of the fixed cross rod, the male die plate 15 is convenient to detach, a horn-shaped channel is formed in the female die plate 11 and is communicated with, the mold comprises a female mold plate 11, a male mold plate 15, a mold cavity 15, a top plate 17, a top rod 18, a base plate 1 and a base plate 18, wherein the female mold plate 11 and the male mold plate 15 are opposite, the mold cavity 16 is formed in one side of the female mold plate 11 and the male mold plate 15, the molten liquid enters the mold cavity 16 through a trumpet-shaped channel for mold processing, the top plate 17 is transversely connected with the top plate 17 in a pi shape, the male mold plate 15 is internally provided with a containing cavity, the top plate 17 is transversely matched in the male mold plate 15 in a sliding mode, so that the top plate 17 can only transversely move along the male mold plate 15, the left end of the top plate 17 can transversely extend out of the right end of the male mold plate 15, the top plate 17 moves to a limit position towards the left side, the right end face of the top plate 17 is just flush with the right end face of the male mold plate 15, the left end of the top plate 17 is connected with a top rod, the top plate 17 is pushed out in cooperation with driving;

the mold closing device 2 and the injection device 3 are electrically connected with a controller arranged on the base 1, the controller arranged on the base 1 controls each component to cooperatively work to complete mold processing work, firstly, a female mold plate 11 and a male mold plate 15 are respectively arranged on a corresponding fixed mold plate 10 and a corresponding movable mold plate 12, the male mold plate 15 is firmly pressed on the female mold plate 11 through a second hydraulic push rod 13 by a second hydraulic cylinder 14, mixed raw materials are put into the hopper 4, at the moment, the first valve structure 6 and the second valve structure 7 are both in a closed state, the mixed raw materials are changed into liquid in a molten state after the temperature is heated to a required temperature by starting the heating device 9 through the controller, the mixed liquid enters the transition channel 5 through the first valve structure 6, after the transition channel 5 is filled with the mixed liquid, the first valve structure 6 is closed, the second valve structure 7 is opened, then the controller starts the first hydraulic push rod 8 to work, the mixed liquid in the transition channel 5 is pushed into the fixed die plate 10, the mixed liquid enters the female die plate 11 through the channel arranged in the fixed die plate 10, the mixed liquid enters the inverted die groove 16 formed by the female die plate 11 and the male die plate 15 through the trumpet-shaped channel, after the mixed liquid in the transition channel 5 is completely pushed, the second valve structure 7 is closed, the first hydraulic push rod 8 returns to the initial position, the rubber frame in the inverted die groove 16 in the die is cooled and formed, the second hydraulic push rod 13 drives the male die plate 15 to separate the male die plate 15 from the female die plate 11, the ejector rod 18 on the top plate 17 in the male die plate 15 touches the matching rod 20 in the process of moving leftwards, so that the matching rod 20 moves rightwards relative to the male die plate 15, the rubber frame in the inverted die groove 16 is ejected out of the inverted die groove 16, the rubber frame falls into the collection bin at the lower end of the base 1 to be collected, the process of die processing, after use, the device is returned to the initial position.

In the second embodiment, on the basis of the first embodiment, the peripheral surface of the male mold plate 15 is rotatably connected with a curved plate 21, the curved plate 21 is S-shaped, one end of the curved plate 21 facing the movable mold plate 12 is connected with a clamping plate 22, the clamping plate 22 is arranged along the direction of the vertical cross section of the curved plate 21, the end of the clamping plate 22 is connected with a rubber strip 23, the peripheral surface of the movable mold plate 12 is connected with an L-shaped matching strip 24 matched with the corresponding curved plate 21, and the clamping plate 22 on the curved plate 21 is matched with the matching strip 24 by rotating the curved plate 21, and meanwhile, since the rubber strip 23 has a certain shape, the male mold plate 15 can be smoothly clamped on the movable mold plate 12, so that the fixing of the male mold plate and the movable mold plate is realized, and meanwhile, the disassembly is convenient.

In the third embodiment, on the basis of the first embodiment, a rectangular plate 25 is connected to four peripheral surfaces of the female die plate 11, a bayonet 26 is screwed on the rectangular plate 25, threaded holes 27 matched with the bayonet 26 on the corresponding surface are formed in the four peripheral surfaces of the fixed die plate 10, and the bayonet 26 is screwed into the threaded holes 27, so that the female die plate 11 and the fixed die plate 10 are fixed, and meanwhile, the separation is facilitated.

In the fourth embodiment, based on the first embodiment, the first valve structure 6 comprises a first transition cylinder 28 connected between the lower end of the hopper 4 and the transition passage 5, the first transition cylinder 28 has an inner diameter larger than that of the hopper 4 and the transition passage 5, and further comprises a first rotating cylinder 29 rotatably connected between the lower end of the hopper 4 and the upper end of the transition passage 5, the first rotating cylinder 29 is internally provided with internal threads, two sides of the first transition cylinder 28 are vertically connected with a first clamping jaw 30 in a sliding manner, two ends of the first clamping jaw 30 are respectively connected with a triangular wedge block with a triangular inclined surface oppositely arranged, the outer side wall of the first claw 30 is provided with an external thread matched with the internal thread of the first rotating cylinder 29, a first driving ball 31 arranged in the first transition cylinder 28 is clamped between two groups of the first claws 30, and the first rotating cylinder 29 is externally connected with a first driving bracelet 32;

the second valve structure 7 comprises a second transition cylinder 33 connected with the outlet end of the transition channel 5, the inner diameter of the second transition cylinder 33 is larger than the inner diameters of the hopper 4 and the transition channel 5, and the second valve structure further comprises a second rotating cylinder 34 rotatably connected with the end part of the transition channel 5, an internal thread is formed in the second rotating cylinder 34, two sides of the second transition cylinder 33 are vertically and slidably connected with a second clamping jaw 35, two ends of the second clamping jaw 35 are respectively connected with a triangular wedge block with a triangular inclined plane oppositely arranged, an external thread matched with the internal thread of the second rotating cylinder 34 is formed on the outer side wall of the second clamping jaw 35, a second driving ball 36 arranged in the second transition cylinder 33 is clamped between the two groups of second clamping jaws 35, and a second driving bracelet 37 is connected outside the second rotating cylinder 34;

the structure adopted by the two groups of driving valve structures has the same wonderful effect as that of the same worker, the first valve structure 6 is arranged in the vertical direction, the second valve structure 7 is arranged in the transverse direction, the first jaw 30 or the second jaw 35 can move along the vertical direction or the transverse direction by rotating the first rotating cylinder 29 or the second rotating cylinder 34, so that the first driving ball 31 is driven to move along the vertical direction, or the second driving ball 36 is driven to move along the transverse direction, so that the channel is blocked by the driving, because the inner diameter of the transition cylinder is larger than that of the connecting pipe at the joint of the upper end and the lower end, when the driving ball moves along with the jaws, when the driving ball moves to the middle position of the transition cylinder, the molten liquid can smoothly pass through the first valve structure 6 or the second valve structure 7, but when the driving ball moves to the limit positions of the two ends along with the jaws, so that the driving ball blocks the channel and plays a role of opening and closing.

When the device is used, firstly, a male template 15 is locked on a movable template 12 by rotating a curved rod, a female template 11 is locked on a fixed template 10 by screwing a bayonet 26, the male template 15 is firmly pressed on the female template 11 by a second hydraulic push rod 13 through a second hydraulic cylinder 14, mixed raw materials are put into a hopper 4, at the moment, a first valve structure 6 and a second valve structure 7 are both in a closed state, the mixed raw materials are changed into liquid in a molten state after a heating device 9 is started through a controller and the temperature is heated to a required temperature, mixed liquid enters a transition channel 5 through the first valve structure 6, after the transition channel 5 is filled with the mixed liquid, the first valve structure 6 is closed, the second valve structure 7 is opened, then the controller starts the first hydraulic push rod 8 to work, the mixed liquid in the transition channel 5 is pushed into the fixed template 10 and enters the female template 11 through a channel arranged in the fixed template 10, the mixed liquid in the transition channel 5 is completely pushed, the second valve structure 7 is closed, the first hydraulic push rod 8 returns to the initial position, the glue frame in the reverse mold groove 16 in the mold is cooled and formed, the second hydraulic push rod 13 drives the male mold plate 15 to separate the glue frame from the female mold plate 11, the ejector rod 18 on the top plate 17 in the male mold plate 15 touches the matching rod 20 in the leftward movement process, so that the matching rod 20 moves rightwards relative to the male mold plate 15, the glue frame in the reverse mold groove 16 is ejected from the reverse mold groove 16 and falls into the collection bin at the lower end of the base 1 to be collected, the process is repeated to perform mold processing work, and the device is restored to the initial position after use.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A production process of a flexible rubber frame for an LED backlight source comprises the following steps:

the method comprises the following steps: selecting raw materials, and uniformly mixing polypropylene, phenolic resin, polystyrene and an additive, wherein the ratio of the raw materials to the additive is 7: 4: 2: 2;

step four: and opening the mold and taking out the molded rubber frame.

2. A production device of a flexible rubber frame for an LED backlight source by using the production process of claim 1 comprises a base (1), and is characterized in that a mold closing device (2) and an injection device (3) are mounted on the base (1);

the injection device (3) comprises a hopper (4) arranged at the upper end of the base (1), the lower end of the hopper (4) is communicated with a transition channel (5) which is transversely connected with the base (1), the left end of the transition channel (5) is connected with the mold closing device (2), a first valve structure (6) is connected between the hopper (4) and the transition channel (5), the right end of the transition channel (5) is connected with a first hydraulic push rod (8), the first hydraulic push rod (8) is connected with a first hydraulic system, so that the first hydraulic push rod (8) can push the molten mixed liquid in the transition channel (5) to the mold closing device (2), the outlet end of the left end of the transition passage (5) is connected with a second valve structure (7), heating devices (9) are respectively arranged outside the hopper (4) and the transition channel (5);

the mold closing device (2) comprises a fixed mold plate (10) arranged on a base (1), a channel is formed in the fixed mold plate (10) and communicated with the end part of a transition channel (5), the left end of the fixed mold plate (10) can be detachably connected with a female mold plate (11) which is transversely matched with the base (1) in a sliding manner, the mold closing device also comprises a movable mold plate (12) which is transversely connected with the base (1), the left end of the movable mold plate (12) is connected with a second hydraulic push rod (13), the second hydraulic push rod (13) is connected with a second hydraulic cylinder (14) arranged on the base (1), the right end of the movable mold plate (12) can be detachably connected with a male mold plate (15) which is transversely connected with the base (1) in a sliding manner, a trumpet-shaped channel is formed in the female mold plate (11) and communicated with the channel in the fixed mold plate (10), and the opposite surfaces of the female mold plate (11) and the male mold plate (15) are provided with inverted mold grooves (16) which are, the male die plate (15) is internally and transversely connected with a Pi-shaped top plate (17), the left end of the top plate (17) is connected with an ejector rod (18) extending out of the left end of the male die plate (15), the movable die plate (12) is provided with a rectangular hole (19) matched with the ejector rod (18), the base (1) is connected with an L-shaped matching rod (20) matched with the ejector rod (18), and the matching rod (20) is matched with the ejector rod (18) to push out the top plate (17);

the mold closing device (2) and the injection device (3) are electrically connected with a controller arranged on the base (1).

3. The apparatus for producing a flexible plastic frame for an LED backlight source according to claim 2, wherein the peripheral surfaces of the male mold plate (15) are respectively connected with a curved plate (21) in a rotatable manner, one end of the curved plate (21) facing the movable mold plate (12) is connected with a clamping plate (22), the end of the clamping plate (22) is connected with a rubber strip (23), and the peripheral surfaces of the movable mold plate (12) are respectively connected with an L-shaped matching strip (24) matched with the corresponding curved plate (21).

4. The device for producing the flexible rubber frame for the LED backlight source according to claim 2, wherein a rectangular plate (25) is connected to four peripheral surfaces of the female mold plate (11), a bayonet lock (26) is screwed on the rectangular plate (25), and threaded holes (27) matched with the bayonet lock (26) on the corresponding surface are formed in the four peripheral surfaces of the fixed mold plate (10).

5. The production device of the flexible rubber frame for the LED backlight source according to claim 2, wherein the first valve structure (6) comprises a first transition cylinder (28) connected between the lower end of the hopper (4) and the transition channel (5), the inner diameter of the first transition cylinder (28) is larger than the inner diameters of the hopper (4) and the transition channel (5), the production device further comprises a first rotating cylinder (29) rotatably connected between the lower end of the hopper (4) and the upper end of the transition channel (5), the first rotating cylinder (29) is internally provided with internal threads, two sides of the first transition cylinder (28) are vertically and slidably connected with a first clamping jaw (30), two ends of the first clamping jaw (30) are respectively connected with a triangular wedge block with triangular inclined surfaces oppositely arranged, and the outer side wall of the first clamping jaw (30) is provided with external threads matched with the internal threads of the first rotating cylinder (29), a first driving ball (31) arranged in a first transition cylinder (28) is clamped between the two groups of first clamping claws (30), and a first driving bracelet (32) is connected outside the first rotation cylinder (29);

the second valve structure (7) comprises a second transition cylinder (33) connected with the outlet end of the transition passage (5), the inner diameter of the second transition cylinder (33) is larger than the inner diameters of the hopper (4) and the transition channel (5), the device also comprises a second rotating cylinder (34) which is rotatably connected with the end part of the transition channel (5), an internal thread is arranged in the second rotating cylinder (34), two sides of the second transition cylinder (33) are vertically connected with a second clamping jaw (35) in a sliding manner, two ends of the second clamping jaw (35) are respectively connected with a triangular wedge block with a triangular inclined surface oppositely arranged, the outer side wall of the second clamping jaws (35) is provided with an external thread matched with the internal thread of the second rotating cylinder (34), a second driving ball (36) arranged in the second transition cylinder (33) is clamped between the two groups of second clamping jaws (35), the second rotating cylinder (34) is externally connected with a second driving bracelet (37).